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Does zero PSI make sense?
I added a Wika 0-5 PSI gauge off of the pigtail servicing the pressuretrol. I cranked up the boiler and waited for my new Gorton #2s to close, and the steam to get to the radiators, but the gauge never moved off of zero. I opened the 15 psi emergency relief valve and heard what sounded like pressurized (albeit low pressure) steam escaping. Maybe for the test I need to set the tstat up a bunch so the boiler runs long enough to be sure all of the radiator vents are closed.
I went with a 0-5 as I was afraid that 0-3 would be too low if my pressuretrol wasn't working. Is 0-5 not sensitive enough, or is it reasonable for this gauge to sit at zero? Maybe a bum gauge?